99999560

素因数分解:

$2^3\times 5^1\times {\mathrm{2499989}}^1$

素因数の和:2500000

約数の個数: 16

約数和(自身を含む): 224999100

約数和(自身を除く): 124999540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2499989, 4999978, 9999956, 12499945, 19999912, 24999890, 49999780, 99999560]

約数ペア:

[(1, 99999560), (2, 49999780), (4, 24999890), (5, 19999912), (8, 12499945), (10, 9999956), (20, 4999978), (40, 2499989)]